Sprinkler



vJuly 25, 1933. E. G. MuNz 1,919,245

SPRINKLER Filed May 26, 1930 INVENTOR 7am/* /Vana Wm SMQ/4% ATToRN EY;

Patented July 25; a Q I I l Y *I j I i nnrnornmenronn rv f v `srmixrirml Alpucatibn `,fumiimages, iefserial No. assises.

This invention relates generally to lsprincasing; Bis the rotatable bodyor nozzle; and f klers for lawns and the like and refers more C is the stem for the body of a sprinklerparticularly to those applicable to underembodyingmy` invention. Aspsliown; the ground piping systems.` j y A, p 'casingA.-has artub'ular'portion 1 threaded a .Oneof the essential'objects of the invenupontlie, upper end of va watersupply pipe .5,5 tion is to provide jan eflicient sprinkler in Din thefground and `has an upwardly open; which alilm of water engages a plurality of ing cup-shaped'portionl 2 provided ,at its v inclined blades or fins on a rotatable nozzle upper end with a lateral flange 3 that is sub. Y stanti'ally lusli withfthe uppersurface of the and causes the latter to rotate. p Y

Another object is to provide a sprinkler ground.y .The body orjnozzleB is supported 69 in which the blades are arrangedat` such an axiallyl on the vstem C and is 'movable longiangle with respect to the ,lmrofvwaterthat Vtudinally of the cup-.shaped portion 2.0i the the vspeed of rotation ofthe nozzle is-prede` casing.'V Preferably thefbodyBl hast-wo `s`ecv y termined. tions E and F respeot'ivel'ythreadedly engagv I Another object is to provide a sprinkler in each other. The lower section E hasta 65' which the nozzle issupported axiallyon a 'base 4 and a cylindrical wallportion 5. The f stem and is movable longitudinally thereof baselalso has an axial opening', an ansuccessively` upwardly and downwardlywith nular recessfuin 4its 'upperfaee aboutf the respect to a portion thereof dependingV upon opening 6,- and a series of inclined blades or i the pressure of water within the nozzle above lfins Splextending between andV connecting into 7,0

and below the said portion, so that'the nozzle the base k4 and cylindrical wall portion .y -5. v. willbe hydraulically balancedand will sub-1 Thev upp'ersection F has atop portion 10,'y stantially loat'while rotating. fan inverted cup-shaped portion 11' andf an Another object is to provide a simple and intermediate web portion'12. AsshownQthe compact'rotary or revolving sprinkler havtop portion 10 is iat andisfa'dapted to seat 75" ing a radial discharge adapted to cover the in anannular recess 13 inthe ilange of greatest possible yarea lwith.- a minimum the casing andto cooperate -Withthelatter amount of'water. y 4- y to enclose the other parts when the` body is Another ob'ect is to'provide an ecient lowered position; the web'12 is at the 1 sprinkler inw ich all ofthe operating parts centerof the top portion; and the VV'cup- 8 1 are lwithin the sprinkler itself. soi that they shapedportion 11 has the downwardly and. 4

are kept clean and. lubricated by the water outwardly flaring wall portion 15 and the i' and .protected fromy dirt when they are independing cylindrical l. wall vportion 16.v

stalled in the ground as permanent fixtures. Preferably thefflaring wall portion 15 has sbu With the above and other objects in view `openingsflj therein that incliiie'supwardly Y f Y the inventionconsists of certain novel fea-v l relative to the axis oftherotatablelbody B, tures of construction, combinations andarwhile the vcylindieal wall portion 16 has rangements of parts that will behereinafter vinternal threads engaging external threads more fully described and particularly pointon the cylindrical wall portion of the lower ed out in the appendedclaims. y y section. The stem C is tubular in formV and@ In the accompanying drawingf eXtends'through the bases 18 4.1"ves'pec-- v Figure 1 Y isjaverticalev` sectional,` view tivelyofjthe cup-shaped portion 2 of thejcas- ,l j

through'a sprinkler embodying my invention ing ander the body BL Preferably v the stem and showing the parts inzoperativesprinis provided at itslower endfwitha nut19f95 Y Y kling position; 1 g w. y'. v that is engageable with the lower `face 20 Figure 2 is a viewsimilar to F igurel but "thebase and is provided at its upper end with showing the parts in inactiveposition; a series of openings 22 'and aflat circular top` 1 Figure 3 is across sectional view taken or head 23. f j Y d y Y Q onthe line 3-3 of Figure` 1 In use the body B,stem C and nut 19 asa 100' f Referring nowato the' (Vlravs'fing,Amistthe unit are 'movable vvertically feas-i.

, water supply to the water will rise in the nozzle B to ing. When the water supply to the pipe D is turned off the body B, stem C and vnut 19 are in Vlowered position within the casing (see Figure 2), and the top 10 seats within the annular groove 13. However, when the pipe 'D is turned onthe the tubular part of the casing v1 against the lower face of the nut 19 and will cause the nut, stem C and body B to rise until the nut 19 engages the lower face 20 of the cup-shaped base (Figure 1) whereupon vwater rising in the stem C will flow laterally through the openings 22 in the stem vto. the blades or fins l8 and will cause rotate.V As waterV is discharged frointhe stein C through the openingsl 22`into the body B, the pressure of water forces the body B upwardly until the base tcontacts with the p head 23. rlhe recess 7 isthen closed by the top 23, consequently .water discharged from the openings 22 will build up a pressure in the recess 7. Since the supply vof water into the body above the o and the water has beendischarging through the openings 17, the pressure in this upper portion has escape from decreased accordingly. As' a result the vwater in the rece'ssg7 builds-up to a pressure the head 23cons'equently the body B is forced downwardly, permitting water to escape from the recess 7 upwardly about the head 23 into the upper portion of the body above and below. the head 23 are in proper ratio to balance thehead hydraulically. In other words', the body will come to rest in a position which willallow enough water to Vbelowpthe head 23 and flow to the upper portionF of the Abody to cause the latter to'y be balanced; Y The water flows in a thin film from the recess y 'and prevents any contact between these two members and leliminates friction at this point. Since the body B is provided with fins or blades 8, it is apparent that this film of water Y contacting therewith will cause positlve rotation of the body B. The angleof the blades with respectfto the film of water will determine the speed of rotation' of the'bo'dy B. It is obvious that the speed ofthis device might also be controlled by a set of brakes similar to those shown in my companion f case Vhat I vclaim as my invention is 1. In' aosprinklera stem having a head, and fluid discharge means at one side of the head, and a nozzle mounted for both rotary andilongltudinal movement on the stem, receiving thehead, and having fins engageable l by the'iiuid from the discharge means to cause the nozzle yto rotate, andthe nozzle vbeing constructed and arranged Vrelative'tol the head 'whereby the p fluid engageable with the 'fins will'be in the form of a thin film.

'said head to form two B. This* will again Aforce the bodyBupwardly until thepressures 7 past the head 23 "rounding the end i Y tatable about a substantially verticalvaxis and r-110 2. In a sprinkler, a stem having a head constituting a baffle and being provided beneath the head with tatably mounted on the stem and enclosing the head, means insaid nozzle coacting with i water chambers on opposite sides thereof whereby water from the water outlets, and a nozzlerooutlets is received inone of said waterchanir bers and Hows around said head into the other water chamber,said nozzle havinga discharge outlet in said otherV water chamber and being also'movable longitudinally of the stem depending upon the pressure of `water within` the nozzle-above and below the head.

3'. In a sprinkler, a water supplyconduit having ra discharge orifice, a `meinber'sur-v rounding the endof said supply conduit rotatable about a substantially vertical axis and axially slidable, said 'member having a water chamber therein for receiving lwaterfrom saidwdischar'ge orifice outlet, and cooperating means on said rotat-V able member and supply conduit respectively arranged intermediate the discharge orifice in Vsaid conduit'andjthe dischargeoutlet in said 'rotatable member for creating aback Jressure whereby;` said "rotatable member Vis and havingfa discharge y 'sufficiently ybalancedl to facilitate rotation arrangedintermediate said `discharge vorifice in said conduit and y 'said rotatable member for throttling the water passing therebetween.Y

5.`In a sprinkler, a water having a discharge orifice, a member4 surof said supply conduit roaxially slidable-,said 1 ember havinga water 'chamber therein f for receiving water from "said discharge orifice, discharge means ink for vdirecting s ubstan# tially all of vthe water radially outward" whereby the maximum area will be sprinkled, f Vand cooperating means on- .memberf and supply conduit respectively ar-V ranged intermediate the discharge 'orificelin and the dischargeA means in-said l120 said Arotatable member said rotatable said conduit rotatablev member for creating aback pressure whereby said rotatable member is sufficiently'balanced tol facilitaterotation thereof.

.Y 6. VIn a sprinkler, a stationarycasing, a hol- `low stem verticallyslidable in sajidcasing and having an enlargedfhead at theup'per end thereof, said-stem being provided with-discharge orificesY below'said head,'a hollow vmember surrounding said -head charge orifices,v said member being. rotatable 'Y 4said'ldischarge outlet in conduit Y and .said dis-y Imember whereby a back and axially slidable on said stem, discharge means on said rotatable member for project-v ing substanti ally-all of the water radially outlWard whereby the maximum area may be sprinkled,V said rotatable member having a portion adapted to contact with said head intermediate said discharge orifices in said stem and said discharge means in said rotatable pressure on said'rotatable member is obtained.V

7. In a sprinkler, a stationary casing, al

hollow stem vertically sldable in said casing and having an enlarged head at the upper end thereof, said stem being provided with dischar e orifices below said head, a hollow mem er surrounding said head and said discharge orifices, said member being rotatable and axially slidable on said stem, discharge means on said rotatablemember for projecting substantially all ofthe water radially outward whereby the maximum area may be sprinkled, said rotatable. memberv having av portion adapted to contact Iwith said head in- 'l termediate said discharge "orifices in saidV c stem and said discharge means in said rotatable member whereby a back pressure on said 'y '7 Y rotatable vmember is obtained, 'and inclined blades on said rotatable member in the path. y

of" the `water from said discharge orifices in sald stem.

8. -In asprinklei-,a non-rotatable member provided with means for discharging water radially, a rotatable member surrounding the discharge end of said stationary member and l having a closed Water chamber therein, means i on said rotatable member in the path of v'said radial discharge for rotating said member from the impact of the water,[adischarge' outlet in said rotatable member', and means intermediate said radial discharge means and said discharge outlet for creating a back pressure whereby saidA rotating member is hydraulicallybalanced-` v.,ELMER ,GQ MUNa 

